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Issue 6, 2018
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LIBS analyses for industrial applications – an overview of developments from 2014 to 2018

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Abstract

Measuring distances in the range between a few centimetres and a few metres are of special interest for automated industrial LIBS applications. They allow for a reliable optical access to measuring objects in a process line under harsh industrial environments. In that range a compromise can be found between the conflicting requirements with respect to the protection of the optics facing the measuring object on one side, and sufficiently high laser irradiance and high receiving solid angle of the measuring radiation on the other side. A concise overview about LIBS studies published in the last four years focusing on industrial applications or perspectives therefore is given. Recent R&D activities in the field of automated LIBS for industrial applications are presented focusing on the following application cases: (a) combined use of inline measured 3D geometry information and LIBS analyses for high-speed sorting tasks of piece goods; (b) sorting of refractories; (c) identification of steel blooms in a rolling mill; (d) inverse production scenario for the recovery of valuable materials from end-of-life electronic equipment. For measuring distances of only a few centimetres the size of a LIBS instrument can be downscaled significantly allowing to set up handheld LIBS analysers. Whereas the precursors of such concepts were studied already more than fifteen years ago, quite recently a competitive market arose where various models of handheld LIBS systems are offered. Industrial application fields are mainly positive material identification of metals and sorting of light metal scraps for recycling purposes. A comparative synopsis of features of these LIBS systems will be presented and arising research themes in this context are outlined.

Graphical abstract: LIBS analyses for industrial applications – an overview of developments from 2014 to 2018

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Publication details

The article was received on 15 Mar 2018, accepted on 01 May 2018 and first published on 11 May 2018


Article type: Critical Review
DOI: 10.1039/C8JA00076J
Citation: J. Anal. At. Spectrom., 2018,33, 945-956
  • Open access: Creative Commons BY-NC license
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    LIBS analyses for industrial applications – an overview of developments from 2014 to 2018

    R. Noll, C. Fricke-Begemann, S. Connemann, C. Meinhardt and V. Sturm, J. Anal. At. Spectrom., 2018, 33, 945
    DOI: 10.1039/C8JA00076J

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